S-TIH53
Code(d)
Code(e)
Refractive Index
nd
Refractive Index
ne
n2325
n1970
n1530
n1129
nt
ns
nA'
nr
nC
nC'
nHe-Ne
nD
nd
ne
nF
nF'
nHe-Cd
ng
nh
ni
1.84666
1.846660
1.855041
Refractive Indicies
λ(µm)
2.32542
1.78519
1.97009
1.79199
1.52958
1.80013
1.12864
1.80925
1.01398
1.81294
0.85211
1.82021
0.76819
1.82568
0.70652
1.83098
0.65627
1.83649
0.64385
1.83807
1.83956
0.6328
0.58929
1.84635
0.58756
1.84666
0.54607
1.85504
1.87210
0.48613
1.87431
0.47999
1.89114
0.44157
1.89419
0.435835
1.91429
0.404656
0.365015
Deviation of Relative Dispersions ∆θfrom "Normal"
ΔθC,t
0.0032
ΔθC,A'
-0.0012
Δθg,d
0.0195
Δθg,F
0.0175
Δθi,g
Constants of Dispersion Formula
A1
1.87904886E+00
A2
3.69719775E-01
A3
2.33730863E+00
B1
1.44121770E-02
B2
6.38817990E-02
B3
1.82668180E+02
Other Properties
Bubble Quality Group B
Specific Gravity d
Remarks
Abbe Number
νd
Abbe Number
νe
23.8
23.78
23.59
Dispersion
nF-nC
Dispersion
nF'-nC'
Coloring
576
596
624
658
692
88
104
1
Mechanical Properties
8
2
960
Young's Modulus E (10 N/m )
8
2
379
Rigidity Modulus G (10 N/m )
Poisson's Ratio σ
0.266
Knoop Hardness Hk[Class]
520
5
170
Abrasion Aa
5
2.81
Photoelastic Constant β (nm/cm/10 Pa)
Chemical Properties
Water Resistance(Powder) Group RW(P)
Acid Resistance(Powder) Group RA(P)
Weathering Resistance(Surface) Group W(S)
Acid Resistance(Surface) Group SR
Phosphate Resistance PR
1
1
1
1.0
1.0
B
3.54
Temperature Coefficients of Refractive Index
-6
Range of Temperature
dn/dt relative (10 /℃)
(℃)
t
C' He-Ne D
e
-40~-20
-0.8
0.4
0.4
0.9
1.4
-20~ 0
-0.8
0.5
0.6
1.0
1.6
0~20
-0.7
0.6
0.7
1.2
1.8
20~40
-0.7
0.7
0.8
1.3
2.0
40~60
-0.6
0.9
1.0
1.5
2.2
60~80
-0.6
1.0
1.1
1.6
2.4
F'
2.8
3.1
3.4
3.7
4.0
4.3
0.03561
0.035608
0.036247
Relative Partial Dispersions
θC,t
0.6614
θC,A'
0.3035
θd,C
0.2857
θe,C
0.5210
θg,d
1.3348
θg,F
0.6205
θh,g
0.5646
θi,g
θ'C',t
0.6932
θ'e,C'
0.4683
θ'F',e
0.5317
θ'i,F
Partial Dispersions
nC-nt
0.023550
nC-nA'
0.010806
nd-nC
0.010172
ne-nC
0.018553
ng-nd
0.047529
ng-nF
0.022093
nh-ng
0.020105
ni-ng
nC'-nt
0.025128
ne-nC'
0.016975
nF'-ne
0.019272
ni-nF'
Thermal Properties
Strain Point StP (℃)
Annealing Point AP (℃)
Transformation Temperature Tg (℃)
Yield Point At (℃)
Softening Point SP (℃)
Expansion Coefficients (-30~+70℃)
-7
(+100~+300℃)
α (10 /℃)
Thermal Conductivity k (W/m·K)
847238
855236
g
4.5
5.0
5.4
5.8
6.2
6.6
λ80
λ70
42
λ5
37
Internal Transmittance
τ10mm
λ(nm)
280
290
300
310
320
330
340
350
360
0.06
370
0.35
380
0.61
390
0.75
400
0.87
420
0.927
440
0.948
460
0.961
480
0.971
500
0.987
550
0.989
600
0.985
650
0.989
700
0.997
800
0.998
900
0.999
1000
0.999
1200
0.998
1400
1600
0.997
0.991
1800
2000
0.986
0.974
2200
0.955
2400
OHARA 02-06